Sifting apparatus



( No Model.)

E. FUCHS.

SIPTING APPARATUS. No. 282,300. 7 Patented July 31. 1888.

T l HI/S, M.

o 2'' P 0 T z I m a f 5 4 L N. PETERS. Phcko-Lxlhcgraphen Washingmn. D.c.

I 1 and combinations of devices hereinafter, de

resents a vertical section of my machine; Fig, i 2, a front elevation,Fig. 4 a sectional plan,

x rection, as shown in Fig. 1.

a pipe a dischargeopening is formed, with ratus for separating theseveral qualities of l i ing the difi'erent grades of fineness of othera I5 produce a machine that is simple, effective,

t and reliable in operation.

UNITED STATES PAT NT OF ICE.

ERNST FUCHS, on CHICAGO, ILLINOIS.

SIFTING APPARATUS.

SPECIFICATION formingpart of Letters Patent N0.

282,300, dated July 31, 1883.

Application filed December 2. 1882. (N0 modcll) fiour and middlings fromthe bran, or for sortpulverized materials; and it is my object to Myinvention consists of the novel devices scribed and specificallyclaimed.I In the accompanying drawings, Figure 1 rep Fig. 5 a rear elevation, ofthe same; and Fig. 3 is a detached sectional view of the riddlearm. I

The same letters in theseveralfigiu-es of the drawings designate thesame or corresponding A, B, and 0 denote three sifter-frames, the upperone, A, being covered with a brass-wire screen, the next one, B, with acoarser quality of bolting-cloth, and the-lower one, C, with fine gauze.All three sifter -frames are secured within a common frame, D, and eachsifter represents in shapea hexagon funnel, the bottom spouts of whichare formed of pipes a, b, and c, of different diameters, which areprojected one through the other in such a manner that the pipe 0 of thesifter, O is the largest, pipea of the sifter A the smallest, and pipebof sifter B of the intermediate size, a sufficient ring-likeopeningbeing provided between each two pipes for the flour and middlingsto pass through. The pipes 12 and a are cut off diagonally at theirbottom ends, which are closed. At one side of the lowest extremity ofeach which a small discharge-spout, m or n, is connected, said spoutsemptying in opposite di- E is the box-frame of the machine, in whichthesifter-frame D is suspended by a series of springs, F, in a manner tobe held steady therein and to allow a vertical vibration of v thesifters. Upon this sifter-frame Dissecured a distributingrcone, G, andover this again a conical cover, H, which is open on topfor the spout Ito discharge the meal upon cone G, over which the meal will spread outand be conducted and distributed near the periphery of sifter A.

J is the main shaft, and K the driving pulley, next to Whichis rigidlymounted upon such shaft the cam-wheel L,

I M is the riddle-shaft, that has an arm, N, which rides upon'thecam-wheel and is vibrated bythe teeth thereof. Two arms, 0,

mounted upon the central portion of shaft M, i

are pivotally connected at their ends to pipe 0 in such a manner thatthe vibration of arm N is transmitted to the sifters, so as to impart tothem a quick andshort vertical reciprocat ing movement. The arm N, Iconstruct in such a manner. that its length can be varied, and therebythe distance of reciprocation of the sifters reduced or increased. ThisI accoinplish by forming the arm N, that is se- Meal being fed throughspout I upon cone G-will spread out as it slides down on said cone andbe discharged in a thin sheet upon the periphery of sifter A, which willallow the middlings and flour to pass through its meshes, but not thebran, which will be discharged through pipe (1. The material that passesthrough sifter A will drop upon sifter B, which will separate thecoarser middlings and discharge them through pipe 6, and sifter C willseparate the fine middlings and discharge them through pipe 0, while thefine flour that passes the meshes of sifter G will drop into hoppers 1?.These hoppers P are provided in their bottom with conveyer-screws Q,each of which has a pulley, R, mounted upon its projecting shaft, to bedriven by a belt from pulleys S of main shaft J. These convey'er screwsdis- IOO charge the flour into spouts T. The quick vertical vibration ofthe sifters will not only assist the quicker discharge of the bran andmiddlings, from the sifters and through the spouts, but it will alsoprevent the meshesof the sifters being clogged or filled up.

This machine or apparatus is very compact in its arrangement, reliablein its operation, and simple and durable in its construction.

What I claim is- 1. In a sifting apparatus, the combination of thefunnelshaped sifters A B 0, having meshes of different degrees offineness, inclosing-framc D, frame E, springs F for suspending saidsifters to said frame E, and the pipes a b c, forming the bottom spoutsof said sifters, the Whole being constructed and arranged substantiallyas and for the purpose shown and described.

2. In a sifting apparatus, the combination ofthe funnel=shaped siftersA, B, and 0, dischargepipes a b 0, frame D, main frame E, springs F,vibrating shaft M, having arms 0,

connected to pipes 0, arm}, cam L, and shaft J, all substantially asdescribed, to operate as specified.

3. In a sifting apparatus, the rotating cam L, in combination with theriddle, the riddleshaft M, socketed arm N, extension-bar n, andset-screw 0, substantially as and for the purpose set forth.

4:. In a sifting-machine, the funnel-shaped sifters A, B, and O, aframe, 1), the distributing-cone G, supported thereon, conical cap H,frame E, springs F, and the spouts or pipes a b c, in combination withmain shaft J, cam L, riddle-shaft M, arms 0 and N, and bar or, the wholebeing constructed and arranged to operate substantially as set forth.

I11 testimony that I claim the foregoing as my invention I affix mysignature in presence of

